Bidirectional muffler



FIG. 1 is a perspective view of the bidirectional muffler;

FIG. 2 is a bottom plan view of the bidirectional muffler;

FIG. 3 is end plan view of the bidirectional muffler, the opposite endplan view being a mirror image of FIG. 3;

FIG. 4 is an elevational view of the right-hand side of thebidirectional muffler as depicted in FIG. 1; and,

FIG. 5 is an elevational view of the left-hand side of the bidirectionalmuffler as depicted in FIG. 1.

The ornamental design for a bidirectional muffler, as shown anddescribed.